This week US investigative non-profit ProPublica announced the launch of a new investigation page on its website dedicated to the issue of patient safety.

As well as adopting the 'series' approach to presenting material linked to an investigation - which can be found for other ProPublica investigations - its patient harm page also offers some examples of audience engagement which are said to make it just a "little bit different" to previous examples, or at least offer "variations" on past methods.